Self-defense umbrella, and method for manufacturing a self-defense umbrella

Abstract

The present invention provides a self-defense umbrella that can effectively provide protection. [Solution] The self-defense umbrella in this embodiment has ribs that spread out radially when opened, and an umbrella cloth which is a fabric attached to cover the radially spread ribs. The umbrella cloth is a woven or knitted fabric containing cut-resistant yarn, and the density of the woven or knitted fabric per unit area is such that when the ribs are opened, one side of the umbrella cloth can be seen from the other side. Preferably, the spacing of the warp threads or weft threads of the fabric is at least half the thickness of the thinnest thread that makes up the fabric.

Description

Technical Field

[0001] The present invention relates to a self - defense umbrella and a method for manufacturing the same.

Background Art

[0002] For example, Patent Document 1 discloses a blade - proof structure characterized by having a shaft, an annular notch portion fixed near the end of the shaft, a plurality of ribs radially suspended from the notch portion, a runner portion slidably attached to the shaft, a stretcher that swingably supports the rib to the runner portion via a joint provided in the middle of the rib, and a blade - proof shielding cloth attached to the rib, and the shielding cloth is configured to open and close in an umbrella shape with the notch portion of the shaft as a fulcrum by sliding the runner portion up and down along the shaft.

[0003] Also, Patent Document 2 discloses an all - weather disaster - prevention umbrella having a central shaft, ribs radially attached from above, a cloth fabric supported by the ribs, and a handle provided at the lower part of the shaft. The material of the ribs is made of two types, carbon (carbon fiber reinforced plastic) or glass fiber, the cloth fabric uses a fabric with blade - proof property, flame - retardant property, and ultraviolet - cut property, the handle of the grip has a light - storing function that glows at night, and further has a whistle.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] The present invention aims to provide a self-defense umbrella that can effectively provide protection. [Means for solving the problem]

[0006] The self-defense umbrella according to the present invention has ribs that spread out radially when opened, and an umbrella cloth which is a fabric attached to cover the radially spread ribs, wherein the umbrella cloth is a woven or knitted fabric containing cut-resistant yarn, and the density per unit area of ​​the woven or knitted fabric is such that when the ribs are opened, one side of the umbrella cloth can be seen from the other side.

[0007] Preferably, the spacing between the warp threads or the weft threads of the fabric is at least half the thickness of the thinnest thread among the threads that make up the fabric.

[0008] Preferably, the spacing between the stitches of the knitted fabric is at least half the thickness of the thinnest thread among the threads that make up the umbrella fabric.

[0009] Preferably, the density of the yarn constituting the woven or knitted fabric is such that it can be moved with a finger. The aforementioned yarn can move laterally to a thickness of about half that of the thinnest yarn among the yarns that make up the knitted or woven fabric.

[0010] The present invention relates to a method for manufacturing a self-defense umbrella, comprising an umbrella fabric and ribs that hold the umbrella fabric, the method comprising: a weaving step in which warp threads or weft threads are arranged at intervals of at least half the thickness of the thinnest thread among the threads constituting the fabric of the umbrella fabric to weave the umbrella fabric; and an attachment step in which the woven umbrella fabric is attached to the ribs in the weaving step, wherein the threads constituting the fabric of the umbrella fabric include cut-resistant threads, and in the attachment step, the attached umbrella fabric allows visibility from one side to the other when the umbrella is opened.

[0011] The present invention relates to a method for manufacturing a self-defense umbrella, comprising an umbrella fabric and ribs that hold the umbrella fabric, comprising: a weaving step in which stitches are arranged at intervals of at least half the thickness of the thinnest thread among the threads constituting the fabric of the umbrella fabric to weave the umbrella fabric; and an attachment step in which the woven umbrella fabric is attached to the ribs in the weaving step, wherein the threads constituting the fabric of the umbrella fabric include cut-resistant threads, and in the attachment step, the attached umbrella fabric allows visibility from one side to the other when the umbrella is opened. [Effects of the Invention]

[0012] According to the present invention, it is possible to provide a self-defense umbrella that can effectively provide protection. It is possible. [Brief explanation of the drawing]

[0013] [Figure 1] This diagram illustrates the overall structure of self-defense umbrella 1. [Figure 2] (a) is a photograph illustrating the density of the fabric when the umbrella cloth 18 is a woven fabric, and (b) is a diagram illustrating the density of the knitted fabric when the umbrella cloth 18 is a knitted fabric. [Figure 3] This is a schematic diagram illustrating the degrees of freedom of the threads when the umbrella fabric 18 is a woven fabric. [Figure 4] This is a schematic diagram illustrating the degrees of freedom of the yarn when the umbrella fabric 18 is knitted. [Figure 5] This is a flowchart illustrating the manufacturing method (S10) of a self-defense umbrella 1 when the umbrella fabric is woven. [Figure 6] This is a flowchart illustrating the manufacturing method (S20) for a self-defense umbrella 1 when the umbrella fabric is knitted. [Figure 7] This diagram illustrates the overall configuration of a modified self-defense umbrella 3. [Modes for carrying out the invention]

[0014] First, let me explain the background to the present invention. As an umbrella with a blade protection function, there is an umbrella in which the umbrella cloth is made of a blade protection fabric. However, for the blade protection fabric, metal fibers or glass fibers are used, and the whole fabric tends to become heavy. Also, for the blade protection fabric, it is common to increase the density of the woven or knitted fabric that constitutes the blade protection fabric, enhance the strength, and increase the resistance so that it is difficult for a blade to pass through. For example, polyurethane is used in combination with other high-strength fibers to improve the density. As a result, the density increases and the weight of the fabric itself becomes heavy. Therefore, in view of the above problems, the present invention provides a self-defense umbrella that realizes weight reduction while having an effective defense function.

[0015] Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the scope of the present invention is not limited to the illustrated examples. FIG. 1 is a diagram illustrating the overall configuration of the self-defense umbrella 1. As illustrated in FIG. 1, the self-defense umbrella 1 has a central rod 10, a tip 12, a main rib 14, a supporting rib 16, and an umbrella cloth 18. The central rod 10 is a support column that supports the self-defense umbrella 1. At one end, a handle 100, which is a part where the user holds the self-defense umbrella 1, is formed, and at the other end, a tip 12 is provided. The central rod 10 is a rod-shaped component made of metal with a diameter of 10 mm or more that is lightweight and has impact resistance. Specifically, the central rod 10 is made of iron, aluminum, or a material having a hardness equal to or higher than these. That is, the central rod 10 has high attack resistance.

[0016] The tip 12 is provided at the tip of the central rod 10. Specifically, the tip 12 is provided at the other end of the end where the handle 100, which serves as the handle of the central rod 10, is formed. The main rib 14 is a framework that serves as a support column for spreading the umbrella cloth 18 when the self-defense umbrella 1 is opened. The main rib 14 extends radially from the tip 12. The main rib 14 is made of glass fiber that is lightweight, has impact resistance, and flexibility, and has high attack resistance. The receiving bone 16 cooperates with the parent bone 14 to support the protective umbrella 1. Specifically, the receiving bone 16 supports the opened parent bone 14 and maintains the strength of the protective umbrella 1. The receiving bone 16, like the parent bone 14, is made of fiberglass with light weight, impact resistance, and flexibility, and has high attack resistance.

[0017] The umbrella cloth 18 is a fabric with anti-cutting properties attached so as to cover the parent bone 14 that spreads radially from the stone protrusion 12. Specifically, the umbrella cloth 18 is a woven or knitted fabric containing anti-cutting yarn. More specifically, the umbrella cloth 18 is a woven fabric woven with anti-cutting yarn or a knitted fabric knitted with anti-cutting yarn. The anti-cutting yarn is a yarn with excellent anti-cutting ability and is composed of one or more fibers selected from para-aramid fibers (e.g., Kevlar (registered trademark)), high molecular polyethylene (e.g., Dyneema (registered trademark), Spectra (registered trademark)), glass fibers, metal fibers, high-strength nylon, carbon fibers, polyparaphenylene benzobisoxazole fibers. In this example, the anti-cutting yarn uses CYGUS / Sigus (Composite Yarn Guarding Slash) manufactured by TASKMATE Co., Ltd.

[0018] Also, the umbrella cloth 18 is transparent. Specifically, the density per unit area of the woven or knitted fabric constituting the umbrella cloth 18 is such that when the parent bone 14 is deployed, the other side can be visually recognized from one side of the umbrella cloth 18. Further, the density of the yarn of the woven or knitted fabric constituting the umbrella cloth 18 is such that the yarn constituting the woven or knitted fabric can be moved with a finger. Preferably, the density of the yarn can move horizontally about half the thickness of the thinnest yarn constituting the woven or knitted fabric. In a woven fabric, the horizontal direction is the direction in which the warp threads are arranged or the direction in which the weft threads are arranged, and in a knitted fabric, the horizontal direction is the direction in which stitches are formed when knitting. That is, by reducing the density of the woven or knitted fabric constituting the umbrella cloth 18 until the umbrella cloth 18 becomes transparent, the inside to the outside of the umbrella cloth 18 can be made visible.

[0019] (The umbrella cloth 18 is a woven fabric) Figure 2(a) is a diagram for explaining the density of the woven fabric when the umbrella cloth 18 is a woven fabric. The umbrella fabric 18 is a woven fabric, and in this example, the case of plain weave will be described. Specifically, the umbrella fabric 18 is composed of pairs of warp and weft threads. More specifically, the woven fabric that is the umbrella fabric 18 is composed of pairs of warp threads 182 and pairs of weft threads 184 that intersect. By composing the warp and weft threads in pairs, the strength of the fabric can be increased. Furthermore, as illustrated in Figure 2(a), the fabric that becomes the umbrella cloth 18 has a spacing a1 between adjacent warp threads 182 and a2 between adjacent weft threads 184, where the spacing a2 is at least half the thickness b of the thinnest thread that makes up the fabric. Here, we have described the case where the umbrella cloth 18 is a plain weave, but this is not limited to plain weave fabrics, as long as the spacing between warp threads, the spacing between weft threads, or the spacing between warp threads and the spacing between weft threads is at least half the thickness b of the thinnest thread that makes up the fabric. Here, spacing in a fabric refers to the gap between warp threads 182 or the gap between weft threads 184. In this example, we have described the case where the spacing a1 between adjacent warp threads 182 and the spacing a2 between adjacent weft threads 184 are at least half the thickness b of the thinnest thread that makes up the fabric. However, we are not limited to this, and the spacing a1 between adjacent warp threads 182 or the spacing a2 between adjacent weft threads 184 may also be at least half the thickness b of the thinnest thread that makes up the fabric. In this explanation, we describe the case where the warp and weft threads of the umbrella fabric 18 are in pairs, but the warp and weft threads, or the warp and weft threads as a set, may be, for example, one thread or three threads, and are not limited to pairs of two.

[0020] (18 knitted umbrella fabrics) Figure 2(b) is a diagram illustrating the density of the knitted fabric when the umbrella fabric 18 is knitted. The umbrella fabric 18 may be knitted, and specifically, as illustrated in Figure 2(b), the umbrella fabric 18 has loop-shaped stitches 186 arranged regularly by the yarn that makes up the knit. Furthermore, in the knit that becomes the umbrella fabric 18, the spacing d of the stitches 186 is more than half the thickness c of the thinnest yarn that makes up the knit. Here, the spacing in knitting refers to the gap between the stitches 186. Specifically, the spacing d of the stitches refers to the width of the loop portion of the stitch 186 illustrated in Figure 2(b), but is not limited to this, and may be, for example, the height of the loop portion.

[0021] Figure 3 is a schematic diagram illustrating the degrees of freedom of the threads when the umbrella fabric 18 is a woven fabric. As illustrated in Figure 3, the umbrella cloth 18, which is a woven fabric, has a degree of freedom that allows it to move between adjacent warp threads when the warp threads 182e of the fabric are moved by pinching a rod-shaped tool, such as a needle, with a tip thin enough to pick up the threads, with the fingers. Similarly, when the weft threads 184 of the fabric are moved with a needle held between the fingers, the weft threads 184 of the fabric have a degree of freedom that allows them to move between adjacent weft threads.

[0022] Figure 4 is a schematic diagram illustrating the degrees of freedom of the yarn when the umbrella fabric 18 is knitted. As illustrated in Figure 4, the knitted umbrella fabric 18 has a degree of freedom such that, in the same way as when the umbrella fabric 18 is a woven fabric, the stitches 186f can move between adjacent stitches when the stitches are moved with a needle or the like held between the fingers. In other words, the threads of the woven or knitted fabric that make up the umbrella fabric 18 are composed with a tension that can be moved with a needle held between the fingers. Therefore, because they have a degree of freedom that allows them to move, when an external force is applied to the umbrella fabric 18, the force is distributed and it becomes less likely to break.

[0023] Figure 5 is a flowchart illustrating the manufacturing method (S10) of the self-defense umbrella 1 when the umbrella fabric is woven. This section explains the case where the warp threads and weft threads are composed of pairs. As illustrated in Figure 5, in step 100 (S100), the yarns that make up the fabric are prepared. Specifically, the cut-resistant yarn and other fibers are combined to create yarn 180 that makes up the fabric. Here, yarn 180 is made by combining cut-resistant yarn with other fibers, but yarn 180 may also be made using only cut-resistant yarn. In step 105 (S105), two strands of yarn 180 used for the warp are combined to form warp threads 182. Similarly, two strands of yarn 180 used for the weft are combined to form weft threads 184. In step 110 (S110), the warp threads 182 and weft threads 184 are arranged such that the spacing between warp threads 182 and the spacing between weft threads 184 are at least half the thickness of the thinnest thread used for the warp and weft, thereby weaving the fabric that will become the umbrella cloth 18. In step 115 (S115), the woven fabric is cut to form the umbrella fabric 18, and the umbrella fabric 18 is attached to the ribs 14. Specifically, the umbrella fabric 18 is sewn to the ribs 14 so that when the ribs 14 are unfolded, the umbrella fabric 18 spreads out to the extent that one side of the umbrella fabric 18 is visible from the other side.

[0024] Figure 6 is a flowchart illustrating the manufacturing method (S20) of the self-defense umbrella 1 when the umbrella fabric 18 is knitted. As illustrated in Figure 6, in step 200 (S200), the yarn that makes up the knitted fabric is prepared. Specifically, the yarn 190 that makes up the knitted fabric is made by combining cut-resistant yarn with other fibers. Here, yarn 190 is made by combining cut-resistant yarn with other fibers, but yarn 190 may also be made using only cut-resistant yarn. In step 205 (S205), the spacing d between the stitches 186 that make up the knitted fabric is set so that the spacing between the stitches 186 is at least half the thickness of the thinnest yarn that makes up the knitted fabric, and the fabric that will become the umbrella cloth 18 is knitted. In step 210 (S210), the woven fabric is cut to form the umbrella fabric 18, and the umbrella fabric 18 is attached to the ribs 14. Specifically, the umbrella fabric 18 is sewn to the ribs 14 so that when the ribs 14 are unfolded, the umbrella fabric 18 spreads out to the extent that one side of the umbrella fabric 18 is visible from the other side.

[0025] As explained above, with the self-defense umbrella 1 of this embodiment, since one side of the umbrella fabric 18 is visible from the other side, when the self-defense umbrella 1 is opened and the user is inside the self-defense umbrella 1, the user can determine the direction to point the self-defense umbrella 1 while looking at the opponent through the umbrella fabric 18. Furthermore, the inside of the self-defense umbrella is prone to shadows due to the curvature of the umbrella and has less light reflection, so when looking from the inside to the outside, the opponent further outside is easier to see, while when looking from the outside to the inside, light reflection occurs easily and it is difficult to see. Furthermore, by deliberately reducing the density of the woven or knitted fabric that makes up the umbrella fabric 18, the umbrella fabric 18 becomes lighter, easier to carry, and the operability of the self-defense umbrella 1 is improved. Furthermore, when the density of the woven or knitted fabric that makes up the umbrella cloth 18 is reduced, the threads have more freedom of movement. For example, when force is applied by a blade, the threads move within the umbrella cloth 18, so instead of the threads being pulled tightly in one direction, the force is distributed as they spread out and shift, making the umbrella cloth 18 less likely to break.

[0026] (modified version) In the above embodiment, the self-defense umbrella 1 has a cut-resistant function due to the umbrella fabric 18, but it may also have a configuration in which, for example, the tip of the umbrella shines. In the modified examples, elements having substantially the same function and configuration as those in the above embodiments are denoted by the same reference numerals, thus omitting redundant explanations. Figure 7 is a diagram illustrating the overall configuration of a modified self-defense umbrella 3. As illustrated in Figure 7, the self-defense umbrella 3 includes a central shaft 10, main ribs 14, secondary ribs 16, umbrella fabric 18, as well as a tip 20, a light-emitting device 22, and a power supply 24. The tip 20 is a hollow component attached to the end of the central rod 10, with its tip formed from a translucent material. Specifically, the tip 20 is attached to the other end of the end where the handle 100 is formed. The light emitted from the light source 200 located inside the tip 20 is emitted from the translucent material portion of the tip 20.

[0027] The light-emitting device 22 includes a light source 200 and a switch 202. The light source 200 is an LED light that shines light into the tip 20 and is located inside the tip 20. Hereafter, the light source 200 will be referred to as the LED light 200. The LED light 200 and the switch 202 are electrically connected to the power supply 24 via lead wires that pass through the central rod 10. The amount of light emitted by the LED light 200 is such that it can blind a person's eyes when directed at it, specifically 1000 lumens or more. Switch 202 controls the illumination of the LED light 200. Specifically, when the user presses switch 202, switch 202 causes the LED light 200 to illuminate, flash, or stop illuminating.

[0028] In the modified example, the self-defense umbrella 3 not only protects the user from knives with the umbrella fabric 18, but also allows the user to blind an assailant with light emitted from the tip 20 by pointing the tip 20 at the assailant and pressing the switch 202. [Explanation of symbols]

[0029] 1, 3...Umbrella for self-defense 10… Center pole 12, 20...Stone 14…Main bone 16…Bone 18...Umbrella cloth 22…Light-emitting device 24…Power supply 100... Handle 180, 190... thread 182... Warp thread 184...Weft 186... stitches 200... LED lights 202... Switch

Claims

1. When unfolded, the main ribs spread out radially, The umbrella fabric is attached to cover the radially spreading ribs. It has, The aforementioned umbrella fabric is a woven or knitted fabric containing cut-resistant yarn. The density per unit area of ​​the woven or knitted fabric is such that, when the main ribs are extended, one side of the umbrella fabric is visible from the other. Umbrella for self-defense.

2. The spacing between the warp threads or the weft threads of the aforementioned fabric is at least half the thickness of the thinnest thread among the threads that make up the fabric. A self-defense umbrella as described in claim 1.

3. The spacing between the stitches in the knitted fabric is at least half the thickness of the thinnest thread among the threads that make up the umbrella fabric. A self-defense umbrella as described in claim 1.

4. The density of the yarns constituting the aforementioned woven or knitted fabric is such that it can be moved with a finger. The aforementioned yarn can move laterally to a thickness of about half that of the thinnest yarn among the yarns that make up the knitted or woven fabric. A self-defense umbrella as described in claim 1.

5. A method for manufacturing a self-defense umbrella having an umbrella fabric and ribs that hold the umbrella fabric, A weaving step in which the warp threads or weft threads are arranged at intervals of more than half the thickness of the thinnest thread among the threads that make up the umbrella fabric, In the weaving step, the woven umbrella fabric is attached to the main ribs in an attachment step. It has, The yarns that make up the fabric of the umbrella cloth include cut-resistant yarns. In the aforementioned mounting step, the attached umbrella fabric allows visibility from one side to the other when the umbrella is unfolded. A method for manufacturing self-defense umbrellas.

6. A method for manufacturing a self-defense umbrella having an umbrella fabric and ribs that hold the umbrella fabric, The process involves a weaving step in which stitches are arranged at intervals of more than half the thickness of the thinnest thread among the threads that make up the umbrella fabric, and the umbrella fabric is woven together. In the aforementioned weaving step, there is an attachment step in which the woven umbrella fabric is attached to the main ribs. It has, The yarns that make up the fabric of the umbrella cloth include cut-resistant yarns. In the aforementioned mounting step, the attached umbrella fabric allows visibility from one side to the other when the umbrella is unfolded. A method for manufacturing self-defense umbrellas.

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